Annealed (O61) C63600 Bronze
O61 C63600 bronze is C63600 bronze in the O61 (annealed) temper. It has the lowest strength and highest ductility compared to the other variants of C63600 bronze. The graph bars on the material properties cards below compare O61 C63600 bronze to: wrought bronzes (top), all copper alloys (middle), and the entire database (bottom). A full bar means this is the highest value in the relevant set. A half-full bar means it's 50% of the highest, and so on.
Mechanical Properties
Elastic (Young's, Tensile) Modulus
110 GPa 16 x 106 psi
Elongation at Break
66 %
Poisson's Ratio
0.34
Shear Modulus
42 GPa 6.2 x 106 psi
Shear Strength
320 MPa 46 x 103 psi
Tensile Strength: Ultimate (UTS)
410 MPa 60 x 103 psi
Tensile Strength: Yield (Proof)
150 MPa 22 x 103 psi
Thermal Properties
Latent Heat of Fusion
230 J/g
Maximum Temperature: Mechanical
210 °C 400 °F
Melting Completion (Liquidus)
1030 °C 1890 °F
Melting Onset (Solidus)
980 °C 1800 °F
Specific Heat Capacity
410 J/kg-K 0.1 BTU/lb-°F
Thermal Conductivity
57 W/m-K 33 BTU/h-ft-°F
Thermal Expansion
17 µm/m-K
Electrical Properties
Electrical Conductivity: Equal Volume
12 % IACS
Electrical Conductivity: Equal Weight (Specific)
13 % IACS
Otherwise Unclassified Properties
Base Metal Price
30 % relative
Density
8.6 g/cm3 540 lb/ft3
Embodied Carbon
2.8 kg CO2/kg material
Embodied Energy
45 MJ/kg 20 x 103 BTU/lb
Embodied Water
340 L/kg 40 gal/lb
Common Calculations
Resilience: Ultimate (Unit Rupture Work)
210 MJ/m3
Resilience: Unit (Modulus of Resilience)
100 kJ/m3
Stiffness to Weight: Axial
7.3 points
Stiffness to Weight: Bending
19 points
Strength to Weight: Axial
13 points
Strength to Weight: Bending
14 points
Thermal Diffusivity
16 mm2/s
Thermal Shock Resistance
15 points
Alloy Composition
| Cu | 93 to 96.3 | |
| Al | 3.0 to 4.0 | |
| Si | 0.7 to 1.3 | |
| Zn | 0 to 0.5 | |
| Sn | 0 to 0.2 | |
| Ni | 0 to 0.15 | |
| Fe | 0 to 0.15 | |
| As | 0 to 0.15 | |
| Pb | 0 to 0.050 | |
| res. | 0 to 0.5 |
All values are % weight. Ranges represent what is permitted under applicable standards.
Followup Questions
Further Reading
Properties and Selection: Nonferrous Alloys and Special-Purpose Materials, ASM Handbook vol. 2, ASM International, 1993